Valve-spring-compressing mechanism



o. p. M LEOD. VALVE SPRING COMPRESSING MECHANISII Filed July 16. 192 8 sheets-shoet 2 merits invalVe spring compressing me'cha of thischaracter that-Will greatly facilitate; the-removal of the valves of an internal coinbustion engine for .cle.aning,vreplacement or r'epair. 1

Patented Jan; 1 3, 1931i ewter.Memos,or emwgqmiem;min m i r vALvE-srnmo -colvrrnnssr ve"mechan i:

I Applieationsfiled an 16, i I-his present invention relates toiinprovenism and appertainsparticularly to a device When engine poppet ivalvesare to be removed for any purpose," t is necessary to Y5 compress the operating spring incident to the removal of the locking key orpin It the I valves are to be ground and all must be removed, it is a long and tedious operation if the spring lifter is to beipositioned' in line and brought intoengagement With each valvej individually and too, if the lifter support to provide a tool of the'naturedescribed that incidentally rern ote'fron anyrof the valve rests on; the head of the valve, as is sometnnes the case, itgis ditficult'to rotate the valvestem to bring the locking key or piniinto such position that it may beWithdrawn-readily,

f It is Within the. province of my invention can be mounted securely on an engine block 7 and quickly adjusted to engage and operate on anyof a numberof-valve' springs Without disturbing or-shif-ting the mountingthat is i 4 heads I so. that the operatorfhas ready access 1 theretoian d is unimpeded in his Work of compressing the springs; Withdrawing the looking keys or-pins and removing the valves, all

lotvvhic'h is moreea'sily and speedily arcpco'mi V I I "Q e JU l7.

' plished than has heretofore been 7 possible.

The: principal object "of the inventioniis to provide a valvesprlng .compresslng mechanisjm of lgenerally improved design and enhancedutility and alfurther object'is the provision :of'sucha device that is characterized by structural simplicity, greater 'eflie iency and reasonable costof production; being thereby rendered commercially-desirable.

' F To the accornplishments.of ,these and-fre latedobjecta as shall become'apparent; as the description proceeds; my invention resides "in the constructlon," combination vand -arrangee -rnent of parts as shall .beihereinafter more;

fully described?illustrated; in the s accoln V Pa yi d w 5 enda-r in ic e ms; e un o appen i v oi i The inven ieuiwill 'viceitSelf; and I I 1928. Serial in; 293,043;

can be niore-jiclearly described; vvhen refere v ience is had to the drawings forming a part of this disclosure hereinlike characters indicate likelparts throughout the several views. lnithedrawingsz+ Figure l is an elevation of my improved device mounted ,onan engine "block and coin- Z I pressing one of the valve springs thereof;

Fig-ure2jisan enlarged elevation of the def Figures'B, 4, 5 and detailjsections as taken: on the lines 33, 5 T5and 6+6, respectively, of Figure 2.1 i

The deviceattaches-to th a inountingebracket 11 having the flanged sW-ivel'base 12, the latter being perforated to' receive one of the upstanding stud bolts :io'f

I p v V engine block I I -fromwhich the vvalvesiare to} be removed, by

theenginebioch and is there retained by the associated nut; being screwed down thereon. A horizontal bridgebar'13 slides transverselythrough the uppelfind of the bracket 11 and is vof sufiicient length to bridgethe engine blockand reach to valves onthe side of the enginere no-tefrorn the mounting bracket. It is prevented from rotation by 'a longitudinal- 1y -ezrtending radia'hrib or-skey :14 that runs ,in a keyvvay 15 in the bored top of the bracket 7 11. q The distant end of the bridge bar 13 is v V,

vertically offset and terminally carries a, vei

ticaliyhinginglock:catch-i 1 6 that fastens at s itsfixed end to the base of a horizontally piv .i In the perpendicularportion ,18 connect ing: the oiiset'end (of thebridge bar13 with the main polrtionlthereof,- a vertically mov-.

ablen anuallyoperable lever 19 is fulcrumed f it Outer, QQdHfQdQptGC Ji to be selectively engagedgbv the hinged locking, catch. 16;

The-h ne endjoff-thelever'19 i-scsplit and having.- ratchet f teeth 20011 the upperifside I I forkedflandi ouplesbythelinks Qllwith a toner 2 encircling-a post 23that'moves ver-e =16 may-be easilyre a The lower end of the upright post 23'is bifurcated with the upper part of the slot 26 therethrough of greater width to accommodate a removable and horizontally slidable thereof and are drawn together near their free ends by a spring 30 coiled about a trans-.

verse connecting bolt 31 with a cooperating nut 32. The spring nesting pocket 33 thus formed by V the confronting jaw-s 29 1 may spread to adapt this particular form of spring lifting fork to various size springs but as different types of forks or spring engaging tools are used in conventional practice, it is the intention to provide such replaceable tools of this nature as may be desired, the same being selectively positionedinthe slot 26.

As the structural composition of the device has'thus been described in detail it should suffice in conclusion to make but brief reference to its use and modus operandi: In use, the

mounting bracket 11 is secured to the top of the engine block centrally of the ends and on the side thereof opposite from the valves to be removed; the bar 13 then bridges or extends across over the blockt-o allow the post 23 to dependiuproximity to the rowof valves, which post is then vertically adjusted by I V placing the removable pin 25 in the proper opening so that when the said post falls to the bottom ofits movement the valve spring "engaging seat 33 on the end of the arm 27 is at the required height to slide under the valve coil spring'to be compressed and by the longitudinal adjustment of the arm 27 the same is readily brought into proper operative contact with the spring. 'The lever 19 is now moved downwards and fulcruming on the'upright 18. and, through the links21 and collar connection 22, raises the post 23thereby compressing the, valve spring engaged. The device can be left with the valve spring in this strained or compressed positionby hinging the locking catch 16whereby the operator is alorded the-free use of both hands in rotating the valve stem, extracting the spring retaining pin and removing the valve all of which operationsare greatly facilitated by the fact that the top or head of the valve is clearand none of the work impeded by the valve spring compressnig mechanism that bridges the e'ngine block and leavesthe operator clear access" to the parts to be" reached.

XVhen one valve hasb'eenremoved and the spring compressor released, thefdev'ice, with-. out changing its mounting, can be swung'into '1 position for and "brought into engagement with the ne tvalve spring and so on along thefull length of the engine if the'device is of sufliclent capacity, though obviously, in the raise said post.

case of a long engine block or otherwise when desired, the device may be shifted in its mounting to enable the spring engaging seat to be more readily brought into engagement with its work. Interchangeable spring engaging forks, of types well known in the art, are selected for employment with varying types of valves and valve operating mechanisms but with these replaceable forks or .springtools this valve-spring compressing V widely different embodiments of my invention constructed within the scope of the appended claims withoutdeparting from the scope thereof, it isintended that all matters contained in the said accompanying specification and drawings shall be interpreted as illustrative and not in a limited sense.

Having thus described my invention,'what I claim as new and desire to secure by Letters Patent is I Y 1. A device of the character described comprising a mounting bracket adapted to be secured, to the engine block on the side thereof remote from the valves to be engaged, a horizontal bar sliding longitudinally through said bracket and adapted to bridge across the engine block, anupright extension on the end of said bar, a lever fulcrumed thereon, V

a valve fork sliding vertically through said bar and means connectingsaid lever and post so that the movement of the former willoperate to raise said post.

2. A device of the character lescribed comprising a mounting bracket adapted 'to' be secured to the engine block on the side thereof remote from the valves to be engaged, a horizontallbar. sliding longitudinally through said bracketand adapted to bridge'across the engine block, an upright extension on the end of said .bar having a horizontally bent top offset from the body of said bar, a looking catch hinged thereon, a lever fulcrumed.

on said upright extension having ratchet teeth on its upper side adapted to be engaged by said locking catch, a valve fork postsliding vertically through said bar, and means connecting said lever'andpost so that the movement of the formerflwill operate to 3; A valve-compressing'mechanism comprising a mounting bracket 'swivelling in a tion, a verticallynoffset end on said bar, a V

"hinged locking catch on said ofiset'jend, a

lever fulcrum'ing on the upstanding portionf "joining" the offset ends of said bar,- a collar 5 connected to saidllever by. links, a vertical 7 post embraced by'said collar and sliding through said bar adjacent the upstanding 1 portion on which saidlever fulcrums, said post having a series of perforations in its 10 upper e11d, and a transverse pin for selective placement inisaid perforations adapted to A 7 span-the upper rim of said collar. j

4. A valve compressing mechanism compprising-a mounting bracket swivelling in a a 15 flanged base adapted for firm mounting on an engine-block, a bar sliding horizontally'in v said bracket and held against relativerotai tionfa vertically offset end on said bar, a hinged locking catch on said offset end, a lever 1 fulcruming on the upstanding portion joiningthe oifset end of said bar, With the. main portion thereof; a" collar connected to said lever by links, a vertiealpostembraced by said collarand sliding throughsaid barjadjacent'the, upstanding portion on which said lever fulcrums, said post having a" series of perforatlons 1n 1ts upper end, a transverse pin for selective placemen'tin said perforations;

" adaptedto span the upper rim o fi said collar,

' ,aoand. a removable valve spring engaging fork adjustably mountedin thelower end of said post. a I

In testimony whereof I hereunto aflix my s g ature. 1

*3: OH ERDJMc [1 1. 5.]: 

